Trane BLW0520 Combustion Blower Freon The McDonnell & Miller 250-3/4-60

The McDonnell & Miller 250-3/4-60 is a high-capacity 3/4" NPT pressure relief valve engineered specifically for hydronic heating systems and large storage tanks

Pre-calibrated for professional HVACR environments

Optimized Combustion: Delivers precise CFM output requested by the heater's control board for efficient thermal transfer

This system is designed for an automatic reset at 165°F

This OEM pressure switch ensures the inducer motor maintains sufficient vacuum

Trane BLW0520 Combustion Blower Freon The McDonnell & Miller 250-3/4-60The Trane BLW0520 Combustion Blower is a critical induced draft assembly engineered for precise flue gas management in high efficiency Trane and American Standard HVAC units. Operating at 208 230V, this centrifugal inducer motor is designed to pull combustion air through the heat exchanger, ensuring the correct fuel to air ratio while safely venting combustion byproducts. This OEM replacement blower features a durable housing and a balanced impeller